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Time-series Analysis (Monitoring Waterbody Area Changes) in Google Earth Engine

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Muddasir Shah

Excerpt:
In this tutorial, I guide you through the dynamic process of monitoring waterbody area changes over time using Google Earth Engine. We begin by seamlessly mosaicing Sentinel2 imagery for the same dates, followed by calculating the Normalized Difference Water Index (NDWI) and creating a precise NDWI threshold mask. Leveraging these insights, we compute the waterbody area and export it as a CSV or excel file for detailed analysis. Moreover, I delve into overcoming Earth Engine's memory limitations and demonstrate the utilization of the chart function for visualizing the time series data. In addition to tracking waterbody area changes, the techniques demonstrated in this tutorial are applicable to a wide range of scenarios and datasets. Whether you're monitoring crop area fluctuations, assessing forest cover changes, or detecting sea water intrusion, the methodologies covered here can be adapted to suit various applications.

Script Link: https://code.earthengine.google.com/a...

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Alternative Keyphrases:
How to find out water body area in timeseries in Google Earth Engine?
How to find vegetation timeseries in google earth engine?
How to find crop area over time using google earth enginne?
Sentinel2 image collection lake, pond, river and waterbody extraction using Google Earth Engine
How to do thresholding in Google Earth Engine?
NDWI, NDVI masking in Google Earth Engine Masking ?
How to aggregate same date tiles in Google Earth Engine?
Landcover classes change over time and area calculation in Google Earth Engine?
Time series area chart in Google Earth Engine?
ui.Chart.feature.byFeature
ee.Image.pixelArea() time series
Sentinel2 image collection pixel aera
How to calculate pixel area of image collection in Google Earth Engine?
How to calculate NDWI in Google Earth Engine?
Lake monitoring and mapping , waterbody monitoring and mapping in Google Earth Engine
How to download area csv using an image collection in Google Earth Engine?
Error: No features contain nonnull values of "system:time_start".
How to download a timeseries image collection area CSV from google earth engine?
GEE Tutorials


Hashtags:
#googleearthengine #sentinel2 #timeseriesanalysis #environment #muddasirshah #earthengine #remotesensing #gis #raster #threshold #NDWI #ndvi #enviromnetalmonitoring

Time Stamps:
00:00 Introduction
01:00 Filtering Images in GEE
01:40 Sentinel2 Same Date MGRS Tile Aggregation
03:30 Time Series NDWI thresholding and masking (Sentinel2)
05:00 Time series pixel area calculation
06:21 Exporting image collection pixel area as a CSV to google drive
07:05 ui.Chart.featurebyFeature()

posted by abegnaselannahb